static public IRecognizer Create(FakeHttpContext context, PageRecognizeEnum pr)
{
IRecognizer recognizer = null;
switch (pr)
{
case PageRecognizeEnum.CssStyle:
recognizer = new CssRecognizer();
break;
case PageRecognizeEnum.HashCode:
recognizer = new HashCodeRecognizer();
break;
case PageRecognizeEnum.Keyword:
recognizer = new KeywordRecognizer();
break;
case PageRecognizeEnum.XPath:
recognizer = new XPathRecognizer();
break;
default:
break;
}
recognizer.Context = context;
return(recognizer);
}
/// <summary>
/// 当前页与预定值比较相似度
/// 非提交数据页面，类似页面后台需要找一个有特点标签生成xpath作为相似度比较依据
/// 提交数据页面比较input标签xpath的hashcode
/// </summary>
/// <param name="source">返回相同数目</param>
/// <returns></returns>
public bool SimilartyCompare(ScriptObject so)
{
//logger.Info("current thread is :" + System.Threading.Thread.CurrentThread.ManagedThreadId);
PageRecognizeEnum pr = (PageRecognizeEnum)Convert.ToInt16(so.PageRecognize);
try
{
return(Recognizer.Create(this.context, pr).Recognize(so));
}
catch (Exception ex)
{
//处理mshtml.HTMLDocumentClass.IHTMLDocument2_get_all()异常
//System.Runtime.InteropServices.InvalidComObjectException: COM 对象与其基础 RCW 分开后就不能再使用
//MyBrowser cb = context.CoreBrowser;
//while (cb.Busy)
//{
// System.Threading.Thread.Sleep(100);
//}
////返回主线程执行脚本
//if (cb.InvokeRequired)
//{
// return (bool)cb.Invoke(new Func<ScriptObject, bool>(SimilartyCompare), so);
//}
logger.Fatal(ex);
//返回false，则重新执行，直到超时
return(false);
}
}
